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1 <br /> pace'x <br /> REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF OUALITY <br /> 0mr James Jacobs QUALITY CONTROL DATA January 03, 1992 <br />' Page 5 PACE Project Number 411227503 <br /> Client Reference Exxon Stockton,CA <br />' TPH GASOLINE/BTEX <br /> Batch: 70 08887 <br />' Samples- 70 0141796, 70 0141800 <br /> METHOD BLANK <br />' Method <br /> Parameter Units MDL Blank <br /> TOTALU L HYDROCARBONS, (LICHT) , <br /> Purgeable Fuels, as Gasoline (EPA 8015) ug/L 50 ND <br /> PURGEABLE AROMATICS (BTXE BY EPA 8020) <br /> Benzene ug/L 0.5 ND <br /> Toluene ug/L 0 5 ND <br />' Ethylbenzene ug/L 0 5 ND <br /> Xylenes, Total ug/L 0 5 ND <br /> 1 <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> urgea a Fuels, as Gasoline (EPA 8015) ug/L 50 349 108% 1017o 6% <br /> Benzene ug/L 0 5 40 0 102% 105% 2% <br /> Toluene ug/L 0 5 40.0 103% 101% 1% <br /> Ethylbenzene ug/L 0 5 40 0 105% 101% 3% <br /> Xylenes, Total ug/L 0 5 80 0 103% 96% 7% <br />' MDL <br /> Method Detection Limit <br />' ND Not detected at or above the MDL <br /> RPD Relative Percent Difference <br /> I <br />' 11 Digital Drive Offices Serving Mmneapofis,Minnesota Charlotte,North Carolina An Equal Opportunity Employer <br /> Novato CA 94949 Tampa,Florida Asheville North Carolina <br /> TEL 415 883 6100 Iowa City Iowa New York New York <br />' FAX 415 883 2673 San Francesco California Pittsburgh Pennsylvania <br /> Kansas City Missouri Denver Colorado <br /> Los Angeles California <br />